Advent calendar book



FIG. 1 is a perspective view of a advent calendar book showing my/our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a perspective view showing the advent calendar book folded in an alternate configuration;

FIG. 9 is a front view thereof;

FIG. 10 is a back view thereof;

FIG. 11 is a left side view thereof;

FIG. 12 is a right side view thereof;

FIG. 13 is a top view thereof; and,

FIG. 14 is a bottom view thereof.

The broken lines in the drawing depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a advent calendar book, as shown and described. 